Development of biodegradable plastic sheet utilizing used cooking oil and mung bean starch/ Catherine C. Atienza, Pia Alexandra D. Gorospe, John Lawrence L. Serrano, Carl Benedict L. Solomon, And Angel Joy B. Tiozon.--

Bachelor's thesis

College of Industrial Technology.-- Bachelor of science in food technology: Technological University of the Philippines, 2025.

Includes bibliographic references and index.

The objective of this study is to produce a biodegradable plastic sheet from mung bean
starch used cooking oil. This methodology aims to minimize the environmental impact of
waste frying oil and plastic, which are two serious sources of terrestrial and aquatic
pollution, as well as waste management problems for the food and environmental industry.
The series of operations include extracting starch, forming the bioplastic and packing the
end product. The mung bean-based bioplastic made use of mung bean starch, coconut and
palm oil, glycerol, sorbitol, citric acid, soy lecithin. Various analysis were conducted to
ascertain that the material could serve as a substitute to biopolymer plastic introduced into
the market, including microbial analysis to total plate count by pour plate CCU/g (1.10),
pH test; the tensile strength result was obtained as 6.0 MPa, soil burial test revealed the
structural driven weakening of the material integrity and almost full decomposition on the
final day, Barrier property near zero (oxygen permeability) by gravimetric method and
moisture permeability obtained 6.12 using desiccant method both passed based on
standard. To make the end product biodegradable, he used an environmentally friendly
packaging material (bioplastic sheet primary packaging, kraft board primary secondary

packaging). Moreover, the product was evaluated with a TUP prototype using a likert-
scale to measure its features. This review reported a mean score of 4.25, which represents

a very good acceptability. In this way, BSP described here was also good in properties
such as a gloss, touch, durability, and other properties.